The Journey of a Network Engineer

Nov 15 2011   3:15AM GMT

How to configure BFD?



Posted by: Sulaiman Syed
Tags:
bfd
CCIE
Cisco
detection
failure
link
router
routing
switch

Bi-directional Forwarding Detection (BFD) is the technology responsible to detect the link down in the milliseconds region. It is important to be used specially in Datacenter, where any link failure should be detected very fast so the network can converge. This of course requires a proper redundant network otherwise there would be not much of convergence going on.

The configurations are very simple.

interface Ethernet0/1
ip address 155.1.146.4 255.255.255.0
bfd interval 50 min_rx 50 multiplier 3
!
router eigrp 100
bfd interface Ethernet0/1
network 0.0.0.0
no auto-summary

First, create theĀ instanceĀ of BFD in the interface, then associate that instance within the router process with the interface.

Hope this was informative.

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